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#                                                                             #
# Calypsi ISO C compiler for 65816                               version 5.16 #
#                                                       25/May/2026  19:33:49 #
# Command line: --speed -O 2 --64bit-doubles mul16to32.c -o                   #
#               /tmp/mul16to32.calypsi.elf --list-file                        #
#               mul16to32.calypsi.lst                                         #
#                                                                             #
###############################################################################

    \ 000000                      .rtmodel version,"1"
    \ 000000                      .rtmodel codeModel,"large"
    \ 000000                      .rtmodel dataModel,"small"
    \ 000000                      .rtmodel core,"65816"
    \ 000000                      .rtmodel huge,"0"
    \ 000000                      .rtmodel target,"none-specified"
    \ 000000                      .extern _Dp
    \ 000000                      .extern _Mul16
    \ 000000                      .extern _Vfp
0001                  // Explicit zext pattern - should trigger the combine.
0002                  unsigned long mul16to32(unsigned short a, unsigned short b) {
    \ 000000                      .section farcode,text
    \ 000000                      .public mul16to32
    \ 000000 aa       mul16to32:  tax
0003                      return (unsigned long)a * (unsigned long)b;
    \ 000001 a5..                 lda     dp:.tiny _Dp
    \ 000003 22......             jsl     long:_Mul16
0004                  }
    \ 000007 6b                   rtl

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Executable  (Text): 8 bytes